Papers by Keyword: Computer Control

Abstract: In this study, maximum bending stresses occurring on the rectangular aluminum beam under various small loads were measured with strain gauge, data acquisition cards and computer. Special software was developed to measure maximum strain and stress on the aluminum beam. Stress values occurring on the aluminum beam under various small loads were measured with strain gauge and those strain values were transmitted to computer directly with data cards. Using the strain, the load and other constant values of the material (Young’s modulus, dimensions, cross section area, load, Poisson’s rate, etc.), the stress values occurring on the beam are calculated and the stress-strain graph is drawn on the screen automatically. In this experimental study, the theoretical knowledge given in the books and experiment results obtained under laboratory conditions were compared with each other. The obtained results were almost 99% similar. Similar studies have characteristics that can be used to measure maximum bending and torsion stresses for real applications in the industry and mobile loading machines.

Abstract: By analyzing the structure characteristics of fermented beer and has the function of system analysis, introduced in the fermentation process of beer, the use of computer technology, the real-time processing of beer fermentation temperature, pressure, the collection of data signal level etc.. The computer system to realize the automatic control and management on the beer fermentation process of beer fermentation, production management and cost will be greatly improved.

Abstract: The optimal design for computer control software is studied. Since computer control software is susceptible to interference during the control process, a computer control software design model based on improved PID algorithm is proposed. The PID algorithm is combined with particle swarm algorithm to calculate PID control parameters, which is viewed as evolutionary particles of the particle population, and given a certain flight speed in the search space, the speed of the particles will be adjusted iteratively and dynamically in accordance with the experience of population’s evolution calculation, in order to achieve computer control software design. The simulation results show that the proposed algorithm applied for computer control software design, can improve the control precision and meet the actual needs of computer control.

Abstract: Hydraulic descaling system is the key device to ensure the surface quality of billet. However, traditional control methods lead to the stability problem in hydraulic descaling system. To solve the problem, the construction of the hydraulic descaling computer control system is studied, the working principle of the system is analyzed, and the high pressure water bench of hydraulic descaling is designed. Based on it, the corresponding computer control software is developed. The application shows that the designed system is stable in practice, which is helpful for enterprise production.

Abstract: With the widely applied computer control system, especially the distributed control system, the complexity of control software is becoming higher and higher, and the quality of the software directly affects the reliability of control system. This paper develops a new traceability system for food processing by using VB programming software and CMM computer software testing technology, and sets up the quality traceability control model of food processing, which realizes the optimal allocation between the raw material batch and the order. Quality traceability system for CMM food processing designed in the third section is verified. The traceability of the quality in the process of food processing can adjust the process of food processing, so as to obtain new quality curve, and to provide a theoretical basis for the research on the quality control of food processing.

Abstract: In this research, a wireless remote environmental monitoring system is presented, which is designed for government to monitor the parameters of environment in factories. The system could collect data related to environment and transfer them by GPRS or Ethernet if condition is allowed. This paper elaborates the system by the order of “analyze-design-realize”. The embedded system is introduced. After some discussion, we chose ARMS based S3C2410 as microprocessor, Linux as the operation system. Then overall design solution and framework of the system is proposed. Finally, this paper gives the test experiment in the factories. The experiment results demonstrate the feasibility and stability of the system.

Abstract: Bioprocess automation is developing fast for the reasons of quality control, production cost reduction et. al.. Bioreactor is the central equipment of bioprocess. Construction of computer controlled bioreactor is need for bioprocess automation. In this research, a two level hierarchical structure computer control bioreactor system is designed and constructed. The lower level plays the major role of set-point feedback control of process variables and the higher level plays the major role of graphical human interface and biological mathematical model solution. This control system has advantages of high reliability and flexibility than the single level digital control system, and has plenty of functions and high practicality compared with a normal commercial one.

Abstract: This paper analyzes the development trend of modern intelligent machinery manufacturing. Meanwhile, this paper also makes elaborate statement of computer control technology in machinery manufacturing and its specific application.

Abstract: According to the error between the model predictive output and the future expected output, ILPC carries out an iterative learning and amending process on the current and the future control input vector, namely performs forecast, iterative amendment, forecast again, iterative amendment again repeatedly in the iterative domain. This paper gives a fast high-precision temperature control systems structure, characteristics and realization method. CARI model and the improved generalized predictive control method are used to improve the control precision of the system, and shorten the response time. The quick high precision temperature control systems structure and realization method are given, and according to the requirements of the task, the existing predictive control algorithm has been improved. Through the experiment, its temperature predictive control systems design scheme and realization method is proved to be reasonable and feasible. It can meet the demands for the expected temperature control.

Abstract: Fuzzy control theory is a computer numerical control theory based on fuzzy set theory, fuzzy language variable and fuzzy logic reasoning. It is widely used for it doesnt require exact mathematical model of controlled object in system design, so that fuzzy control has an advantage in researching high nonlinear system like inverted pendulum. However, rule explosion problem is unavoidable when we use fuzzy control theory to solve some multivariable system control problems such as inverted pendulum. This paper presents the application of the optimal control theory to reduce the input variable dimensions and the rules of the fuzzy controller through designing a fusion function, solving rule explosion problem successfully. The paper also discusses the control effect influenced by quantification factors, promoting performance quality of the fuzzy controller by setting threshold value to make quantification factors automatic regulation.